Julius meyer



No. 6l7,537. Patented lanrl o, I899.

J. MEYER.

SAFETY DEVICE FOR ELEVATORS.

(Application filed Sept. 12, 1898.)

(No Model.)

WITNESSES: INVENTOR I m: News vz'rcas co. PhOTO-LITHCL. WASHINGTON DV 6UNITED STATES PATENT (51mins.

JULIUS MEYER, OF NEW YORK, N. Y.

SAFETY DEVICE FOR ELEVATolis".

SPECIFICATION forming part of Letters Patent No. 617,537, dated anuary10, 1899 Application filed September 12 1898. Serial No. 690,'l09. (Nomodel.)

To aZZ whom it may concern.-

Be it known that I, JULIUS MEYER, a citizen of the United States ofAmerica, and a resident of New York, in the county and State of NewYork, have invented certain new and useful Improvements in SafetyDevices for Elevators, of which the following is a specification.

This invention relates to certain improvements in elevators, lifts, orhoists and all other constructions in which a car for the carrying ofpassengers or freight, or both, is moved up and down in a vertical shaftand between vertical guides.

My improved safety device operates automatically when the speed of theascending or descending car exceeds a safe limit for any one of variousreasons. The said automatic stopping is a compound action, being partlysudden and partly gradual. The combination of parts forming the car isto that end so arranged that the sudden stop and consequent shock isimparted to a part which cannot transfer the shock to the car-body. Thispart-the clutch-platform-is arranged at a certain fixed distance belowthe car-body. After having been brought to a sudden stop somewhere inthe said vertical shaft the clutch-platform receives the car-body, whichcontinues in its fall after the clutch-platform has already beenstopped, and the momentum of the car-body is broken by a cushionarranged between the clutch-platform and the car-body, so that thelatter will settle down gradually upon the said platform withoutreceiving, and therefore without imparting a hard shock to its contents.Thus the bottom of the said vertical shaft is, so'to speak, moved up anddown with the car-body, and the carbody therefore, Whatever may be theentire vertical distance traversed by the car at a speed higher than theadmitted standard, can never travel relative to the said bottom of theshaft through any greater height than the fixed distance between thecar-body and the clutch-platform. This distance can be so fixed that thecar-body resting on the clutch-platform may be lifted to the next higherlanding wherever in the shaft the said clutchplatform may have beenarrested.

In the accompanying drawings, Figure 1 is a front view of anelevator-car, showing my invention applied to the same free to move upand down in the elevator-shaft. Fig. 2 is a similar View showing theplatform clutched and the car settled down on the same. Fig. 3 is ahorizontal section on line 8 3 through the cushioning device andsuspension-rods and a plan view of the platform.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents-an elevator-car withsuspension-ropes a, which are attached to the car in any approved form.

The car is provided in the center of each side with a vertical pipe I),which serves as a guide for the suspension-rods c, and with holes 11 inthe bottom of the car for said rods 0, which have a head 0 at theirupper ends. They carry, by means of rings d, the concentric bags B, alsothe platform D. The bags B serve as an air-cushion between the car A andthe platform D; but I do not wish to be understood as limiting myself tothis particular form of cushioning device, as many otherwell-known'devicesmaybesubstituted. The tops of bags B are fastened tothe bottom of the car A, the outer bag being provided with I holes e.The bags are made of a fabric which will permit of the escape of airthrough the same when the bags are compressed, holes 6 having beenprovided to prevent the bursting of the outer bag. The rings on theinner bags are held in place by tie-rods f. The platform D consists of aframe g, having a covering it of a shape adapting it to cooperate withthe cushioning device B.

The platform D carries the clutching device. I do not wish to beunderstood as limiting myself to the particular one herein described.

On the bottom of the platform is fastened bracket 6. It carries wheel K,which rolls on the guide-beam m. Its movement is transmitted by belt ato the pulley 0 of the speedgovernor p, to the loose collar q of whichare fastened cords T, which lead to wedges s, movable in grooves of theshoes 25 of the brake-levers u. If the speed of the platthe platform,continuing in its travel, acts upon the free ends of the brake-leversu,which turn on fulcrum 03, and by its weight increases the pressure ofthe brake-shoest on the guidebeams m. The travel of the platform beingthus stopped while the car still continues its movement the aircushionis brought into effect and lets the car down easy upon the platform 71.g.

I do not claim as my invention the cushioning and clutching devicesdescribed above.

Vhat I do claim as my invention, and Wish to secure by Letters Patent,is-

1. The combination with an elevator-car and a platform below said car,and automatic locking devices on said platform, of a series of air-bagsinterposed between said platform and said car, substantially asdescribed.

2. The combination with an elevator-car and a platform below said carand automatic locking devices on said platform, of a series of air-bagsinterposed between said platform and said car, one of said bags beingprovided with restricted discharge-openings, substantially as described.

3. The combination with an elevator-car of a platform supported from andbeneath said car and sliding in the elevator-shaft, a compressibleconnection between car and plat form, locking devices for the platform,an automatic speed-governor which operates the locking devices, andcushioning means interposed between the car and the platform,substantially as described.

4. In combination with the car or hoist, the flexible or pliableair-receptacle suspended from said car or hoist and carried thereby, theplatform or traveling bottom connected to travel with the car or hoistand suspended below said receptacle, and means for arresting saidplatform at several points to receive the car or hoist cushioned by saidair-receptacle; substantially as set forth.

5. In combination with the car or hoist, the flexible or pliableair-receptacle below said car or hoist, the platform or traveling bottomcarried by said car or hoist, and below said receptacle, means forarresting said platform to receive the car or hoist cushioned by saidair-receptacle, and means suspending said platform, but permitting saidcar to approach said platform; substantially as set forth.

Signed by me, at New York, N. Y. this th day of September, 1898.

JULIUS MEYER.

Witnesses:

W. H. PUMPHREY, A. PARKER SMITH.

